瞬
シュン, またた.く, まじろ.ぐ

wink, blink, twinkle

JLPT1 G7 S18 F1265

As per 舜# (flame-like) + 目 eye → flame-like, rapid movement of the eyes in winking/blinking → *wink*; *blink* → *twinkle*; (in a) *flash*.

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